Valve.



No. 863,449. A PATBNTED AUG. 13, 1907.

C. G. RICHARDSON & F. N. GONNET.

A VALVE.

APBLIUATION FILED HAB. 6. 1906.

' UNITED STATES PATENT v OFFICE.

CHARLES G. RICHARDSON AND FREDERICK N. CONNET OF PROVIDENCE, RHODEISLAND.

VALVE Specification of Letters Patent.

Patented Aug. 13, 1907.

Application filed March 6, 1905. Serial No. 248,439.

To all 'whom it may concern: g a

Be it known that we, CHARLES G. RICHARDSON and FREDERICK N. CONNET, bothresidents of the city of Providence, in the county of Providence andState of Rhode Island7 have invented certain new and useful Improvementsin Valves; and we do hereby declare that the following is a full,clear,`and exact description thereof, reference being had to theaccompanying drawings, and to the letters of reference marked thereon,which form a part of this specification.

This invention relates to valves, and has for its object to improve theconstruction of that class of pump valve that is opened automatically bythe action ofthe pump piston.

In devices of this class it is essential that a spring shall be used toact upon the valve disk to assist in rfeturning the same quickly to itsseat after it has been raised. i

On account of the constant reciprocating raction to which the workingparts of these valvesare subjected, they soon become worn and should beinspected regularly and the parts often replaced. Many of the valves arelocated in positions within the pump casing where it is diicult to getat them for repairsand the use of tools for this purpose is oftenimpossible. It is therefore of utmost importance that the means forretaining these parts shall be scheld that they may be readily removedand at the same time secured in such a manner that they cannot workloose and get ,free to damage the other working parts of the pump. I

a Some dilculty has been heretofore experienced in devices of thischaracter in that means have been used for permanently lockinglthe'collar on the stem, by keys or the like, which renders it diflcultto remove the parts for inspection ord repair. In other constructionswhere adjustable means havebeen used no practical method for locking hasbeen provided.

The essential feature of this improved device is the providing of meanswhereby the collar that retains the valve spring may be securely lockedagainst a rotary or an `outward movement and at the same time that allof the working parts may be free to act and also readily removed withoutthe use of tools but by the use of the thumb and fingers of one handonly. The collar may lalso be adj/usted vertically to regulate thetension of the spring on the valve disk when desired.

With these and other objects in view, the invention consists of certainnovel features of construction, as will be more fully described andparticularly pointed out in the appended claims.

In the accompanying drawings: Figure 1 represents a centrallongitudinall section of the device.

'recess in the collar. Fig.

vis turned down at 6 and threaded Just below the threaded portion thestem is enlarged at Fig. 2- is a plan view of the ribs therein. Fig. 3-is a top plan view of the collar showing the square recess therein andthe elongated slot for the reception of the spindle. Fig.'4- is acentral sectional elevation of said collar. Fig. 5- is a side elevationof the locking nut showing the downwardly projecting portion whichengages the corresponding 6- is a bottom plan view of said nut'showingthe projecting squared portion thereon. Fig. 7- is a perspective view ofa portion oi the spindle showing the fiattened portion that engages thecorresponding apertures in the collar to prevent the latter fromrotating. Fig. 8- `represents the valve disk in elevation.

Referring to the drawings at l is the valve seat made in.the form of aring that may be secured in the pump (not shown) in the usual manner.This ring is provided with a central hub 2 that is supported in positionby the ribs 3, this hub as shown in Fig. 1, does not extend up to thelevel of the valve seat or upper edge 4 of the ring. Projectingupwardfrom this hub 2 is thel stem 5 which stem is preferably made of aseparate piece of material and secured in said hub either by forcing itinto the hub and riveting it in place or by means of a screw thread. Theupper end of said stem to receive the nut.

22 and flattened at 7-7 on two sides for the purpose of entering acorresponding slot in the collar. Below this-'flattened portion the stemhas an annular groove or recess 8 into which the collar may be droppedgiven a one quarter turn and locked` against an endwise movement whendesired. At 9 is the lock nut having a knurled fiange l0 on its upperedge, and a downwardly extending squared portion 1l that sits into acorresponding recess l5 made to receive it in the upper face of thecollar or washer I2. This collar is also recessed on its under side at13 to receive the upper coil of the spring 14. Through this collar ismade a hole 16.

with at sides to engage the corresponding attened sides of the spindleat 7 by which fiat sides said collar is prevented from turning on thespindle.

The valve disk I6 is preferably made of vulcanized valve seat showingthe` rubber having a raised hub or center portion 17-17 on both itsupper and lower faces. Through the center of this hub is a round hole 18that is provided with a metal bushing 19 to prevent excessive wear b yits constantly reciprocating motion on the stem. On the upper side ofthis disk is a thin metal washer 20 against which the lower coil of thespring rests to prevent it from cutting into the face of the rubberdisk. The thickening up of this hub provides a longer bearing suri faceon the stem, stifiens the central portion of the disk and also allowssaid disk to receive a central support or bearing on the hub 2 in thering and further enables us to obtain the advantage of a more ready flowof water through the valve as hereinafter described. The ribs 3-3 arecut away on their upper edges to prevent them from coming in contactwith and wearing the under side of the disk. By forming this disk thesame on both sides it may readily be reversed when one side becomesworn.

In structures of this class, after a certain period of use the valvebecomes worn on the surface that makes contact on the val-ve seat. Inour device we have cut away the ribs to allow the disk to seat itselfaround the edge of the ring only, as it is found in practice that thedisk will accommodate itself much more readily to the hub and ringalonethan when it also bears on the ribs. The valve disk is soconstructed that when it 'becomes worn it may be readily reversed andany defect thus remedied.

In the majority of instances the valve will be' located in such positionin the pump that it can be reached only with diiiiculty, the hand-holethrough which access to the valves is had, being of a size to admit onearm only of a person and the valve being located at arms lengththerefrom. In cases where the spring is held by keys, nuts and checknutsor any other means requiring a wrench or other tools to remove them theset tools can be used by the sense of feeling only., It will thereforebe seen that the operation will be attended with considerabledifficulty, which'is entirely obviated by the construction of theimproved device herein'described in which no tools are required for theremoval o the valve.

The lock is readily accessible to the hand, the collar being grasped bythe thumb and fingers and pressed down onto the shoulder 2O into theannular recess 8, it.

is then givena quarter turn which locks it in that position under theextending side 2l-2l of the head 22 against the tension of the spring.By thus pressing the collar downward it is carried clear of the squaredportion of the nut and said nut lis free to be unscrewed from thethreadedportion on which it turns easily. The collar is their carriedback the one quarter turn and readily removed from the stem therebypermitting the remaining parts, namely the spring and valve disk withits washer 20 to be also easily removed. To replace the parts inposition, the valve disk, Washer, and spring are slipped over the valvestem; the collar l2 is then placed over'the stem and is pressed downover the dat-f tened portion of the stem until it is opposite the recess8 when it is given a quarter turn. The collar will be thus heldautomatically in such a position that the nut 9 can be easily screwed onto the stem after which the collar is released by turning it again onequarter round when it will be pressed upwardly by the spring against thenut 9 and its square recess engages the nut to prevent the latter fromturning, thus locking the entire device.

The metal bushing of the valve disk 19 is preferably made with theiianged lugs 2li-2 4 to hold it in the rubber and the latter is thenmolded around the bushing and flange.

The downwardly projecting hub 17 of the valve disk p having the shape ofa truncated cone will deflect the water outwardly as it strikes upon itssurfacel in rushing upwardly through the valve and will thus materiallyassist the easy passage of the water.

The construction shown is an extremely practical and simple method forboth locking and adjusting and at the same time allows of the parts tobe very readily removed for inspection or repair.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is:

1. In a device of the character described, the combina tion of a valveseat, a valve, a stem, a spring, and a locking device upon the stemincluding a collar to form an abutment for the spring, means engagingsaid stem to prevent the accidental removal of said collar therefrom,said engaging means being itself normally held from removal from saidstem by engagement with said collar, and means whereby said collar maybewithdrawn from said engaging means and locked to the stem against anendwise movement Vto permit the removal of said engaging means from saidstem.

2. Ina device of the character' described, the combination of a valveseat, a. valve, a spring, a valve stem, a collar provided with arecessed portion and normally held from turning on said stem, a nutthreaded on said stem and arranged to normally engage said recess insaid collar'to hold said nut from turning, and means whereby said 90collar may be withdrawn from engagement with the nut and locked to thestem against an endwise movement to' permit the removal of said nut fromthe stem.

In a device of the character described, the combination of a valve seat,a valve located on said seat, a spring to hold the valve to its seat, avalve stem, a collar provided with a recessed portion and normally heldfrom turning on said stem and a nut threaded on said stem and arrangedto engage said recess in said collar 'to hold said nut fromv turning. 4.In a device of the character described, the combination of a valve`seat, a valve located on said seat, a spring to hold the valve to itsseat, a valve stem, a collar norvmally held from turning on said stem, anut threaded on said stem, said collar being provided with a recessednor- 1 5 tiorp to engage and hold said nut from turning, said stom beingprovided with an annular groove to receive said collar and in whichgroove said collar may be turned and locked against an endwise movementto hold it lfrom the nut against the spring pressure, allowing the saidnutte be readily unscrewed from the stem. 11"

5. In a deviceof the character described, the combinationof a valveseat, a valve, a stem, a spring, and a lockingdelvice upon the lstem toform'an abutment for the spring, said locking device consisting of ascrew nut upon the stem, a collar upon the stem normally prevented fromturning and engaging the nut to prevent it from turning but movablelongitudinally upon the stem, .and moans whereby the collar may be heldagainst longitudinal movement when separated from the nut so as topermit the re- 120 moval of the `latter from the stem.

6. In a device of the character described, the combination of a valveseat, a stem, a reversible valve having a central extension from both-faces around the stem, a spring, and a locking device upon the stem toform an abutment forthe spring,. said locking device consisting of ascrew nut upon the stem, a collar upon the stem normally'prevented fromturning and engaging the nut to prevent it from turning but movablelongitudinally upon the stem, and means whereby the collar may be heldvlli() vagainst longitudinal movement when separated from thc nut' s'o asto permit the removal of tl latter from thc stem.

7. In a device of the character described, the combination of areversible valve disk having a central hub cx 135, tending from bothfaces thereof, said extensions being intrgral with the body .of thedisk, a valve frame having a bearing on its outer portion to receive acorresponding portion of the disk, and a central hub to normally receiveand support the hub of the disk.

8. In a device of the character described, the combination of a valvedisk having a central bearing extension or hub, said hub being providedwith oblique faces disposed to meet and direct the water passing throughthe valve, 'itlr a valve frame having an outer portion to receive theouter edge of the disk and a central hub to receive and 10 support thesaid hub of said disk.

In testimon; whereof, we have hereunto set our hands this 2nd day ofMarch A. D. 1905.'

' CHARLES G. RICHARDSON.

FREDK. N. CONNET. In presence of- H. J. BURROUGH, WM. R'. TILLINGHAST.

